Nui was very prompt in his replies and is very accommodating. He answered all my questions clearly and even gave some suggestions on where we can put our luggage after checking out because our flight was late in the evening.
The unit is exactly what you see in the photos. Update--it now has a water heater in the shower :) There were three of us in th unit and there was enough room for everyone to walk around, open luggages and do stuff without bumping into each other. The bedroom and the small kitchen has an awesome view of the city.
It is fairly near Phra Khanong station but you can also take the shuttle from the condo to the station that leaves every hour and you only have to pay 10 baht.
Nui gave very detailed instructions and information on how to get around the city. He explained what are the places of interest in every station and restaurants and shops that you might want to try around the condo. Definitely a super host! We will surely stay at his place again if we go back to Bangkok! :)